JPH11330842A - Broadband antenna - Google Patents
Broadband antennaInfo
- Publication number
- JPH11330842A JPH11330842A JP12852398A JP12852398A JPH11330842A JP H11330842 A JPH11330842 A JP H11330842A JP 12852398 A JP12852398 A JP 12852398A JP 12852398 A JP12852398 A JP 12852398A JP H11330842 A JPH11330842 A JP H11330842A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- power supply
- point
- ground
- broadband antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 229
- 230000003071 parasitic effect Effects 0.000 claims abstract description 11
- 230000005284 excitation Effects 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims description 21
- 238000009434 installation Methods 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 15
- 230000005684 electric field Effects 0.000 description 9
- 230000005855 radiation Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 241001590997 Moolgarda engeli Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
(57)【要約】
【課題】 低姿勢で、かつ双方向指向特性を有し、従来
より広帯域な広帯域アンテナを提供する。
【解決手段】 接地導電体（３）と、一端部が開放端と
され、他端部が前記接地導電体と電気的に接続される第
１導電体（２1 ）と、前記第１導電体の一端部から所定
距離離れた一点と給電点（４）とを接続する給電導電体
（２2 ）とで構成される励振素子と、両端部が前記接地
導電体と電気的に接続される第２導電体（１）で構成さ
れ、前記第２導電体の一方の端部を含む第１端子部領
域、あるいは他方の端部を含む第２端子部領域が、前記
第１導電体の他端部を含む端子部領域、あるいは、前記
給電導電体と略平行に設置される無給電素子とを有す
る。
(57) [Problem] To provide a broadband antenna having a low attitude, a bidirectional directional characteristic, and a wider band than the conventional one. SOLUTION: A ground conductor (3), a first conductor (2 1 ) whose one end is an open end and the other end is electrically connected to the ground conductor, and the first conductor An excitation element composed of a power supply conductor (2 2 ) connecting one point separated by a predetermined distance from one end of the power supply and a power supply point (4), and a second end electrically connected to the ground conductor at both ends. A first terminal region including one end of the second conductor, or a second terminal region including the other end of the second conductor, the other end of the first conductor; A terminal portion region including a portion, or a parasitic element installed substantially parallel to the power supply conductor.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、広帯域アンテナに
係わり、特に、移動通信の屋内中継装置に採用される小
型アンテナ、あるいは広帯域特性が要求される基地局用
アレイアンテナに適用して有効な技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wideband antenna, and more particularly, to a technique effective when applied to a small antenna used in an indoor repeater for mobile communication or an array antenna for a base station requiring a wideband characteristic. About.
【０００２】[0002]
【従来の技術】携帯電話等の移動通信では、電波が遮蔽
される関係上、屋内での使用が制限されている。そのた
め、駅等の公共施設の天井に中継装置を設け、屋内にお
いても携帯電話を使用可能とすることが試みられてい
る。この中継装置に使用されるアンテナとしては、低姿
勢で、かつ双方向指向特性のものが要求され、この要求
を満足するものとして、例えば、図１８に示す半ループ
アンテナがある。図１８は、従来の半ループアンテナの
概略構成を示す斜視図である。同図において、１１は放
射素子を構成する半ループ状導電体であり、半ループ状
導電体１１は、例えば、金属の線、条、管等の導電性の
あるもので構成される。この半ループ状導電体１１は、
接地導電体１２に垂直な端子部領域と、接地導電体１２
に平行な平行部領域とで構成される。半ループ状導電体
１１の一方の端子部領域は、給電点１３において接地導
電体１２の裏面側に配設される同軸接栓（図示せず）の
芯導電体と接続され、また、半ループ状導電体１１の他
方の端子部領域は、接地導電体１２と電気的に接続され
る。給電点１３から半ループ状導電体１１に沿った長さ
は、設計周波数ｆｏの約λｏ／２となるようにされる。
ここで、設計周波数ｆｏは、使用周波数帯域の中心周波
数を意味し、また、λｏは、設計周波数ｆｏにおける波
長を示す。2. Description of the Related Art In mobile communications such as cellular phones, indoor use is restricted due to shielding of radio waves. For this reason, it has been attempted to provide a relay device on the ceiling of a public facility such as a station so that a mobile phone can be used indoors. An antenna used for this relay device is required to have a low attitude and a bidirectional directional characteristic. A half-loop antenna shown in FIG. 18 satisfies this requirement, for example. FIG. 18 is a perspective view showing a schematic configuration of a conventional half-loop antenna. In the figure, reference numeral 11 denotes a semi-loop-shaped conductor constituting a radiating element. This semi-loop conductor 11
A terminal area perpendicular to the ground conductor 12;
And a parallel portion region parallel to. One terminal region of the semi-loop conductor 11 is connected to a core conductor of a coaxial connector (not shown) disposed on the back side of the ground conductor 12 at the feeding point 13, The other terminal area of the conductor 11 is electrically connected to the ground conductor 12. The length from the feeding point 13 along the semi-looped conductor 11 is set to be about λo / 2 of the design frequency fo.
Here, the design frequency fo means the center frequency of the used frequency band, and λo indicates the wavelength at the design frequency fo.
【０００３】図１９は、図１８に示す半ループアンテナ
の一例のＸ−Ｙ面の電界成分の指向特性を示すグラフで
ある。なお、図１９では、半ループ状導電体１１とし
て、断面形状が円で、その半径が０．５ｍｍの導電体を
使用し、また、半ループ状導電体１１の端子部領域の長
さ（図１８に示すＬV ）を４０ｍｍ、水平領域の長さ
（図１８に示すＬH ）を１１４ｍｍとし、さらに、接地
導電体１３を、一辺が１ｍの正方形とした場合の、図１
８に示す座標系における、Ｘ−Ｙ面の電界成分の指向特
性を示すグラフである。この図１９のグラフから分かる
ように、図１８に示す半ループアンテナは、Ｘ軸上に指
向性を有する双方向指向特性を有している。図２０は、
図１９と同一条件下での図１８に示す半ループアンテナ
の一例のＶＳＷＲの周波数特性を示すグラフである。こ
の図２０から分かるように、図１８に示す半ループアン
テナにおける、ＶＳＷＲ１．５以下の比帯域幅（規定の
値に合致する帯域幅とその帯域の中心周波数との比）は
５．４％である。FIG. 19 is a graph showing the directivity characteristics of the electric field component on the XY plane of an example of the half loop antenna shown in FIG. In FIG. 19, as the semi-loop conductor 11, a conductor having a circular cross section and a radius of 0.5 mm is used, and the length of the terminal region of the semi-loop conductor 11 (see FIG. 19). 18 when the length L V shown in FIG. 18 is 40 mm, the length of the horizontal region (L H shown in FIG. 18) is 114 mm, and the ground conductor 13 is a square having a side of 1 m.
9 is a graph showing directivity characteristics of an electric field component on an XY plane in the coordinate system shown in FIG. As can be seen from the graph of FIG. 19, the half loop antenna shown in FIG. 18 has bidirectional directional characteristics having directivity on the X axis. FIG.
20 is a graph showing the frequency characteristics of the VSWR of the example of the half-loop antenna shown in FIG. 18 under the same conditions as in FIG. As can be seen from FIG. 20, in the half-loop antenna shown in FIG. 18, the fractional bandwidth of VSWR 1.5 or less (the ratio of the bandwidth matching the specified value to the center frequency of the band) is 5.4%. is there.
【０００４】[0004]
【発明が解決しようとする課題】前記した如く、図１８
に示す従来の半ループアンテナは、低姿勢で、かつ双方
向指向特性を有している。しかしながら、前記従来の半
ループアンテナの帯域特性はそれほど広帯域ではなく、
前記従来の半ループアンテナは、周波数分割多重のよう
に送信帯域と受信帯域とを共用して使用する携帯電話シ
ステム、あるいは今後予想される高速大容量伝送のため
に、広帯域に渡って周波数特性の変化が少ない伝送系が
要求されるシステムに使用される中継器用アンテナには
適していないという問題点があった。As described above, FIG.
The conventional half-loop antenna shown in (1) has a low attitude and has bidirectional directional characteristics. However, the band characteristics of the conventional half-loop antenna are not so broad,
The conventional half-loop antenna is a mobile phone system that shares a transmission band and a reception band like frequency division multiplexing, or has a frequency characteristic over a wide band for high-speed and large-capacity transmission expected in the future. There is a problem that it is not suitable for a repeater antenna used in a system requiring a transmission system with little change.
【０００５】本発明は、前記従来技術の問題点を解決す
るためになされたものであり、本発明の目的は、低姿勢
で、かつ双方向指向特性を有し、従来より広帯域なアン
テナを提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide an antenna having a low attitude, a bidirectional directional characteristic, and a wider band than the conventional antenna. Is to do.
【０００６】また、本発明の他の目的は、高利得、かつ
双方向指向特性を有し、従来より広帯域なアンテナを提
供することにある。It is another object of the present invention to provide an antenna having a high gain, a bidirectional directional characteristic, and a wider band than the conventional antenna.
【０００７】本発明の前記ならびにその他の目的と新規
な特徴は、本明細書の記述及び添付図面によって明らか
にする。[0007] The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.
【０００８】[0008]
【課題を解決するための手段】本願において開示される
発明のうち、代表的なものの概要を簡単に説明すれば、
下記の通りである。SUMMARY OF THE INVENTION Among the inventions disclosed in the present application, the outline of a representative one will be briefly described.
It is as follows.
【０００９】即ち、本発明の広帯域アンテナは、接地導
電体と、一端部が開放端とされ、他端部が前記接地導電
体と電気的に接続される第１導電体と、前記第１導電体
の一端部から所定距離離れた一点と給電点とを接続する
給電導電体とで構成される励振素子と、両端部が前記接
地導電体と電気的に接続される第２導電体で構成され、
前記第２導電体の第１端子部領域、あるいは第２端子部
領域が、前記第１導電体の端子部領域、あるいは、前記
給電導電体と略平行に設置される無給電素子とを有する
ことを特徴とする。That is, a wide-band antenna according to the present invention comprises: a ground conductor; a first conductor having one end open and the other end electrically connected to the ground conductor; An excitation element composed of a power supply conductor connecting a point at a predetermined distance from one end of the body and a power supply point, and a second conductor having both ends electrically connected to the ground conductor. ,
The first terminal portion region or the second terminal portion region of the second conductor has a terminal portion region of the first conductor or a parasitic element installed substantially parallel to the power supply conductor. It is characterized by.
【００１０】また、本発明の広帯域アンテナは、前記励
振素子と前記無給電素子を、誘電体基板の表面に形成す
るとを特徴とする。[0010] The broadband antenna according to the present invention is characterized in that the excitation element and the parasitic element are formed on a surface of a dielectric substrate.
【００１１】また、本発明の広帯域アンテナは、両端部
が開放端とされるループ状の第１導電体と、前記第１導
電体の一端部から所定距離離れた一点と給電点とを接続
する第１給電導電体と、前記第１導電体の他端部から所
定距離離れた一点と給電点とを接続する第２給電導電体
とで構成される励振素子と、一部分が、前記第１導電体
の一部分と略平行に設置されるループ状の第２導電体で
構成される無給電素子とを有することを特徴とする。[0011] Further, in the broadband antenna of the present invention, a loop-shaped first conductor having both open ends is connected to a feeding point and a point separated by a predetermined distance from one end of the first conductor. An excitation element including a first power supply conductor, a second power supply conductor connecting a point at a predetermined distance from the other end of the first conductor and a power supply point, and a part of the excitation element; And a parasitic element formed of a loop-shaped second conductor that is installed substantially in parallel with a part of the body.
【００１２】また、本発明の広帯域アンテナは、ループ
状の第３導電体で構成される無給電素子と、一端部が開
放端とされ、他端部が互いに前記第３導電体に接続され
る第１導電体および第２導電体と、前記第１導電体の一
端部から所定距離離れた一点と給電点とを接続する第１
給電導電体と、前記第２導電体の一端部から所定距離離
れた一点と給電点とを接続する第２給電導電体とで構成
される励振素子とを有する広帯域アンテナであって、前
記第３導電体の一部分は、前記第１導電体および第２導
電体の一部分と略平行に設置されることを特徴とする。Further, the wideband antenna according to the present invention has a parasitic element composed of a loop-shaped third conductor, one end of which is open, and the other end connected to the third conductor. A first conductor that connects a first conductor and a second conductor, and a point separated by a predetermined distance from one end of the first conductor to a power supply point;
A broadband antenna comprising: a power supply conductor; and an excitation element including a second power supply conductor connecting a point at a predetermined distance from one end of the second conductor and a power supply point. A part of the conductor is installed substantially parallel to a part of the first conductor and the part of the second conductor.
【００１３】[0013]
【発明の実施の形態】以下、図面を参照して本発明の実
施の形態を詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１４】なお、実施の形態を説明するための全図に
おいて、同一機能を有するものは同一符号を付け、その
繰り返しの説明は省略する。In all the drawings for describing the embodiments, those having the same functions are denoted by the same reference numerals, and their repeated description will be omitted.
【００１５】［実施の形態１］図１は、本発明の実施の
形態１の広帯域アンテナの概略構成を示す斜視図であ
る。同図において、２1 は放射素子を構成する逆Ｌ字形
状のＬ字形導電体（本発明の第１導電体）であり、この
Ｌ字形導電体２1 は、本発明の第１導電体を構成し、金
属の線、条、板、管等で構成される。Ｌ字形導電体２1
の一端部は開放端とされ、また、他端部は接地導電体３
と電気的（または高周波的）に接続される。このＬ字形
導電体２1 は、接地導電体３と略垂直に設置される他端
部を含む端子部領域と、接地導電体３と略平行に設置さ
れる一端部を含む平行部領域とで構成される。２2 は給
電導電体であり、この給電導電体２2 は、一方の端部
が、給電点４において接地導電体３の裏面側に配設され
る同軸接栓（図示せず）の芯導体と接続され、また、他
方の端部が、接地導電体３に略平行関係にあるＬ字形導
電体２1の一端部から所定距離離れた一点と接続され
る。なお、このＬ字形導電体２1 の一端部から所定距離
離れた一点は、接続される同軸線路のインピーダンス値
により選定される。この場合に、同軸接栓の芯導体を、
接地導電体３に形成された給電点４に対応する穴を貫通
させた後給電導電体２2 に接続するか、または、芯導体
をそのまま延長して、Ｌ字形導電体２1 に直接接続して
給電導電体２2 の代用としてもよい。接地導電体３は、
導電体の面であれば、格子や適宜打ち抜いた金属板（所
謂パンチメタル）を使用してもよい。前記した如く、給
電点４の背面には同軸接栓が取り付けられており、この
同軸接栓の外導体は接地導電体３に接続される。[First Embodiment] FIG. 1 is a perspective view showing a schematic configuration of a broadband antenna according to a first embodiment of the present invention. In the figure, 2 1 is L-shaped conductor inverted L-shape constituting the radiating element (first conductor of the present invention), this L-shaped conductor 2 1, the first conductor of the present invention It consists of metal wires, strips, plates, tubes, etc. L-shaped conductor 2 1
Has one end open and the other end connected to the ground conductor 3.
And electrically (or high frequency). In this L-shaped conductor 2 1 includes a terminal region that includes the other portion being disposed substantially perpendicular to the ground conductor 3, a parallel region including the one end portion which is substantially parallel to the installation and the ground conductor 3 Be composed. 2 2 is a feeder conductor, the feeder conductors 2 2 has one end, the core conductor of the coaxial connector (not shown) disposed on the back side of the ground conductor 3 at the feed point 4 is connected to, and the other end is connected to a point spaced a predetermined distance from the L-shaped conductor 2 1 one end which is in substantially parallel relation to the ground conductor 3. Incidentally, a point a predetermined distance from one end of the L-shaped conductor 2 1 is selected by the impedance value of the coaxial line connected. In this case, the core conductor of the coaxial connector is
It is connected to a feeding conductor 2 2 After through holes corresponding to the feeding point 4, which is formed on the ground conductor 3, or by directly extending the core conductor, connected directly to the L-shaped conductor 2 1 or as a substitute for the feeding conductor 2 2 Te. The ground conductor 3
As long as the surface is a conductor, a lattice or a suitably punched metal plate (so-called punched metal) may be used. As described above, the coaxial connector is attached to the back of the feeding point 4, and the outer conductor of the coaxial connector is connected to the ground conductor 3.
【００１６】本実施の形態において、給電点４からＬ字
形導電体２1 の開放端となる一端部までの長さ（図１に
示すＬA ）は使用中心周波数の略λｏ／４に選択され
る。１は枠状の半ループ状導電体（本発明の第２導電
体）であり、この半ループ状導電体１は、本発明の第２
導電体を構成する。この半ループ状導電体１は、コの字
形に形成され、半ループ状導電体１の両端部は接地導電
体３と電気的（または高周波的）に接続される。この半
ループ状導電体１は、接地導電体３と略垂直に設置され
る一端部を含む第１の端子部領域と、接地導電体３と略
垂直に設置される他端部を含む第２の端子部領域と、接
地導電体３と略平行に設置される平行部領域とで構成さ
れる。また、半ループ状導電体１の一方の端子部領域
は、Ｌ字形導電体２1 の端子部領域、あるいは給電導電
体２2 と略平行に設置される。ここで、半ループ状導電
体１の長さは、使用中心周波数の略λｏ／２に選択され
る。[0016] In this embodiment, the length from the feeding point 4 to the end portion to be L-shaped conductor 2 1 open ends (L A shown in FIG. 1) is selected to substantially .lamda.o / 4 Using the center frequency You. Reference numeral 1 denotes a frame-shaped semi-loop conductor (the second conductor of the present invention).
Construct a conductor. The half-loop conductor 1 is formed in a U-shape, and both ends of the half-loop conductor 1 are electrically (or high-frequency) connected to the ground conductor 3. The semi-loop-shaped conductor 1 has a first terminal region including one end disposed substantially perpendicular to the ground conductor 3 and a second terminal region including the other end disposed substantially perpendicular to the ground conductor 3. And a parallel portion region installed substantially in parallel with the ground conductor 3. Further, one terminal region of the half-loop-shaped conductor 1, L-shaped conductor 2 1 terminal region, or is substantially parallel to the installation and the feeding conductor 2 2. Here, the length of the semi-loop-shaped conductor 1 is selected to be approximately λo / 2 of the center frequency used.
【００１７】図２は、本実施の形態の広帯域アンテナの
一例のＶＳＷＲの周波数特性を示すグラフである。この
図２のグラフは、半ループ状導電体１、Ｌ字形導電体２
1 および給電導電体２2 として、断面形状が円で、その
半径が０．５ｍｍの導電体を使用し、半ループ状導電体
１の端子部領域の長さ（図１に示すＬV ）を４０ｍｍ、
水平部領域の長さ（図１に示すＬH ）を１１４ｍｍと
し、また、Ｌ字形導電体２1 の端子部領域の長さ（図１
に示すＬC ）を２４ｍｍ、水平部領域の長さ（図１に示
すＬB）を１０６ｍｍとし、また、給電点４をＬ字形導
電体２1 の端子部領域と平行に４５ｍｍ離して設置し、
また、Ｌ字形導電体２1 の端子部領域と半ループ状導電
体１の端子部領域の一方との間隔が２ｍｍとなるように
設置し、さらに、接地導電体１３を、一辺が１ｍの正方
形とした場合の、ＶＳＷＲの周波数特性を示すものであ
る。この図２のグラフから分かるように、本実施の形態
の広帯域アンテナでは、ＶＳＷＲが１．５以下の比帯域
幅は約１７％となっている。FIG. 2 is a graph showing the frequency characteristics of the VSWR as an example of the broadband antenna according to the present embodiment. The graph of FIG. 2 shows a half-loop conductor 1, an L-shaped conductor 2
As 1 and the power supply conductors 2 2, a circle cross-sectional shape, the radius using 0.5mm conductor, the half-loop-shaped conductor 1 the length of the terminal region of the (L V shown in FIG. 1) 40mm,
Length of the horizontal section area (L H shown in FIG. 1) and 114 mm, also, L-shaped conductor 2 1 of the length of the terminal region (Fig 1
L C) of 24mm shown in, the length of the horizontal section area (the 106mm of L B) shown in FIG. 1, also the feeding point 4 is installed parallel apart 45mm and L-shaped conductor 2 1 terminal region ,
In addition, the terminal area of the L-shaped conductor 21 and one of the terminal areas of the semi-loop-shaped conductor 1 are arranged so that the distance between them is 2 mm. 7 shows the frequency characteristics of the VSWR in the case of. As can be seen from the graph of FIG. 2, in the wideband antenna of the present embodiment, the fractional bandwidth where VSWR is 1.5 or less is about 17%.
【００１８】図３〜図５は、図２と同一条件下での本実
施の形態の広帯域アンテナの一例における、周波数が、
それぞれ８４０ＭＨｚ、９２０ＭＨｚ、および１０００
ＭＨｚのときの、図１に示す座標系における、Ｘ−Ｙ面
の電界成分の指向特性を示すグラフである。これらのグ
ラフから分かるように、本願実施の形態の広帯域アンテ
ナは、広帯域に渡りＸ軸上に指向特性を有する双方向指
向特性となっている。このように、本実施の形態の広帯
域アンテナによれば、半ループ状導電体１の端子部領域
の一方と、Ｌ字形導電体２1 の端子部領域とを、電磁的
に結合させることにより、半ループ状導電体１が無給電
素子として機能し、２つの共振回路による複同調回路の
原理により広帯域特性を実現することができる。これに
より、本実施の形態の広帯域アンテナによれば、低姿勢
で、かつ双方向指向特性を有し、従来よりも帯域特性を
広帯域とすることができる。FIGS. 3 to 5 show an example of the frequency band of the wideband antenna according to the present embodiment under the same conditions as in FIG.
840 MHz, 920 MHz, and 1000 respectively
2 is a graph showing directivity characteristics of an electric field component on an XY plane in the coordinate system shown in FIG. 1 at MHz. As can be seen from these graphs, the broadband antenna according to the embodiment of the present application has bidirectional directional characteristics having directional characteristics on the X axis over a wide band. Thus, according to the antenna of the present embodiment, one of the terminal regions of the half-loop-shaped conductor 1, and the L-shaped conductor 2 1 terminal region, by electromagnetically coupling, The semi-loop-shaped conductor 1 functions as a parasitic element, and a wide band characteristic can be realized by the principle of a double tuning circuit using two resonance circuits. As a result, according to the broadband antenna of the present embodiment, the antenna has a low attitude, has bidirectional directional characteristics, and can have a wider band characteristic than conventional ones.
【００１９】なお、本実施の形態の広帯域アンテナにお
いて、半ループ状導電体１の形状は、コの字状に限定さ
れるものではなく、例えば、図６（ａ）に示すような円
弧状でもよく、さらに、図６（ｂ）に示すように、半ル
ープ状導電体１の端子部領域は、必ずしも接地導電体３
と垂直でなくてもよい。この場合に、半ループ状導電体
１の端子部領域の一方と、Ｌ字形導電体２1 の端子部領
域とを電磁的に結合させて、広帯域特性を実現するため
に、Ｌ字形導電体２1 の端子部領域の形状もまた半ルー
プ状導電体１の形状と相似形であることが望ましい。ま
た、本実施の形態の広帯域アンテナおいて、図７（ａ）
〜（ｃ）に示すように、半ループ状導電体１の端子部領
域と、給電導電体２2 とを電磁的に結合させてもよく、
また、半ループ状導電体１の端子部領域は、どちらの領
域でも構わない。In the broadband antenna of the present embodiment, the shape of the semi-loop-shaped conductor 1 is not limited to a U-shape, and may be, for example, an arc shape as shown in FIG. Further, as shown in FIG. 6B, the terminal region of the semi-loop-shaped conductor 1 is not necessarily connected to the ground conductor 3.
It does not have to be vertical. In this case, one of a half loop conductor 1 terminal region, and electromagnetically coupled to form an L-shaped conductor 2 1 terminal region, in order to realize a wide band characteristic, L-shaped conductor 2 the shape of the first terminal region also is desirably shape similar to the shape of the half-loop-shaped conductor 1. Also, in the broadband antenna according to the present embodiment, FIG.
As shown in ~ (c), it may a terminal region of the half-loop-shaped conductor 1, be electromagnetically coupled to form a power feeding conductor 2 2,
The terminal region of the semi-looped conductor 1 may be either region.
【００２０】さらに、本実施の形態の広帯域アンテナお
いて、接地導電体３のは平面の場合について説明した
が、これに限定されず、例えば、図８（ａ）に示すよう
に、半ループ状導電体１、Ｌ字形導電体２1 および給電
導電体２2 を頂角とする優角コーナ状に折り曲げたり、
また、図８（ｂ）に示すように、図８（ａ）に示す優角
の辺を弧に代えた円弧状としてもよい。接地導電体３と
して、図８（ａ）、図８（ｂ）に示す接地導電体３を使
用することにより、図９に示すように、図１に示す座標
系における、Ｘ−Ｚ面における指向特性の最大方向をＸ
軸に方向に近づけることができるため、本実施の形態の
アンテナを天井等に設置した場合の無線エリアを変化さ
せることができる。なお、図９において、３０ａは、コ
ーナ状に折り曲げられた接地導電体３ａを使用したとき
の指向特性を、また、３０ｂは、平面形状の接地導電体
３ｂを使用したときの指向特性を示す。Further, in the broadband antenna according to the present embodiment, the case where the ground conductor 3 is a flat surface has been described. However, the present invention is not limited to this. For example, as shown in FIG. bend the conductor 1, L-shaped conductor 2 1 and the power supply conductors 2 2 reflex angle corner shape and vertex angle,
Further, as shown in FIG. 8 (b), an arc may be formed by replacing the reflex angle side shown in FIG. 8 (a) with an arc. By using the grounding conductor 3 shown in FIGS. 8A and 8B as the grounding conductor 3, as shown in FIG. 9, the orientation on the XZ plane in the coordinate system shown in FIG. X is the maximum direction of the characteristic
Since it is possible to approach the axis, the wireless area when the antenna of this embodiment is installed on a ceiling or the like can be changed. In FIG. 9, reference numeral 30a denotes a directional characteristic when the grounded conductor 3a bent in a corner shape is used, and 30b denotes a directional characteristic when the plane-shaped grounded conductor 3b is used.
【００２１】［実施の形態２］図１０は、本発明の実施
の形態２の広帯域アンテナの概略構成を示す斜視図であ
る。[Second Embodiment] FIG. 10 is a perspective view showing a schematic configuration of a broadband antenna according to a second embodiment of the present invention.
【００２２】本実施の形態の広帯域アンテナは、誘電体
基板５上に、プリント配線板による回路形成手法による
エッチングを施し、半ループ状導電体１、Ｌ字形導電体
２1および給電導電体２2 を形成した点で、前記実施の
形態１と相違する。本実施の形態の広帯域アンテナにお
いて、誘電体基板５の厚さが使用波長（λｏ）に比して
十分薄いものであれば、前記実施の形態１のアンテナの
特性と等価な特性を得ることができる。なお、図１０に
おいて、４1 は同軸接栓の芯導体を示す。The wideband antenna of the present embodiment, on the dielectric substrate 5 is subjected to etching by circuit formation method according to the printed wiring board, half-loop-like conductor 1, L-shaped conductor 2 1 and the power supply conductors 2 2 Is different from the first embodiment in that In the broadband antenna according to the present embodiment, if the thickness of the dielectric substrate 5 is sufficiently thin compared to the operating wavelength (λo), characteristics equivalent to the characteristics of the antenna of the first embodiment can be obtained. it can. In FIG. 10, 4 1 represents the core conductor of the coaxial connector.
【００２３】［実施の形態３］図１１は、本発明の実施
の形態３の広帯域アンテナの概略構成を示す図である。[Third Embodiment] FIG. 11 is a diagram showing a schematic configuration of a wideband antenna according to a third embodiment of the present invention.
【００２４】本実施の形態の広帯域アンテナも、誘電体
基板５上に半ループ状導電体１、Ｌ字形導電体２1 、お
よび給電導電体２2 を形成したものであるが、誘電体基
板５の表面および裏面に半ループ状導電体１、Ｌ字形導
電体２1 、および給電導電体２2 を形成した点で、前記
実施の形態２と相違する。図１１（ａ）は、誘電体基板
１の表面（または裏面）を示すもので、実線は、誘電体
基板５の輪郭、および半ループ状導電体１を示し、この
半ループ状導電体１は、マイクロストリップ線路のアー
ス導電体を兼用している。また、図１１（ｂ）は、誘電
体基板１の裏面（または表面）を示すもので、実線は、
誘電体基板５の輪郭、およびＬ字形導電体２1 、給電導
電体２2 、給電のためにマイクロストリップ線路２3 、
および結合のためのマイクロストリップ線路２4 を示し
ている。なお、図１１（ａ）、図１１（ｂ）の点線は、
誘電体基板５の裏側に形成される半ループ状導電体１、
Ｌ字形導電体２1 、給電導電体２2 、給電や結合のため
のマイクロストリップ線路（２3 ，２4 ）を示してい
る。The broadband antenna of the present embodiment also has is obtained by forming a dielectric substrate 5 on the half-loop-shaped conductor 1, L-shaped conductor 2 1, and the power supply conductors 2 2, the dielectric substrate 5 front and back surfaces to the half-loop shape conductor 1, L-shaped conductor 2 1, and the power supply conductors 2 2 in that the formation of the, different from the second embodiment. FIG. 11A shows the front surface (or the back surface) of the dielectric substrate 1, and the solid line shows the contour of the dielectric substrate 5 and the half-loop conductor 1. , Also serves as the ground conductor of the microstrip line. FIG. 11B shows the back surface (or front surface) of the dielectric substrate 1, and the solid line indicates
The outline of the dielectric substrate 5, and L-shaped conductor 2 1, the feeding conductor 2 2, the microstrip line 2 3 for feeding,
And shows a microstrip line 2 4 for binding. Note that the dotted lines in FIG. 11A and FIG.
A semi-loop-shaped conductor 1 formed on the back side of the dielectric substrate 5,
L-shaped conductor 2 1, the feeding conductor 2 2 shows a microstrip line for feeding or coupling (2 3, 2 4).
【００２５】本実施の形態の広帯域アンテナにおいて、
給電のためのマイクロストリップ線路２3 に入力された
電力は、半ループ状導電体１をマイクロストリップ線路
のアース導電体とするマイクロストリップ線路２3 上を
伝送し、Ｌ字形導電体２1 、給電導電体２2 からなる所
謂逆Ｆ形アンテナを励振する。Ｌ字形導電体２1 の延長
上に接続された先端部が開放端とされるマイクロストリ
ップ線路２4 は、１／４波長結合線路を構成し、このマ
イクロストリップ線路２4 により、Ｌ字形導電体２1 の
端部と、半ループ状導電体１とが、電磁結合で高周波的
に接続される。本実施の形態のアンテナによれば、Ｌ字
形導電体２1 と接地導電体３との機械的な接続が不要と
なり、また、給電点４と半ループ状導電体１との接続点
も共通化できることから、製造が容易となる他、信頼性
を向上させることできる。In the broadband antenna according to the present embodiment,
Power input to the microstrip line 2 3 for power feeding, the half-loop-shaped conductor 1 transmits the microstripline 2 3 on which a ground conductor of the microstrip line, L-shaped conductor 2 1, feed to excite the Igyaku F-shaped antenna place consisting of a conductor 2 2. Microstrip line 2 4 connected tip on the extension of the L-shaped conductor 2 1 is an open end constitutes a 1/4-wavelength coupling line, a microstrip line 2 4, L-shaped conductor and 2 1 end, half-loop-like conductor 1 and is high-frequency connected by electromagnetic coupling. According to the antenna of the present embodiment, the mechanical connection between the L-shaped conductor 2 1 and the grounding conductor 3 will not be required, sharing also a connection point between the feeding point 4 and the half-loop-shaped conductor 1 Because it is possible, the manufacturing can be facilitated and the reliability can be improved.
【００２６】［実施の形態４］図１２は、本発明の実施
の形態４の広帯域アンテナの概略構成を示す図である。
同図において、６は同軸接栓、７は平行−不平行変換
器、２０はループ状導電体、２１は両端部が開放端とさ
れるコの字形の半ループ状導電体、２４，２５は給電導
電体である。本実施の形態の広帯域アンテナは、前記実
施の形態２に示す広帯域アンテナと、接地導電体３側の
端面について前記実施の形態２に示す広帯域アンテナと
線対称の広帯域アンテナとを、誘電体基板５に形成した
広帯域アンテナである。[Fourth Embodiment] FIG. 12 is a diagram showing a schematic configuration of a wideband antenna according to a fourth embodiment of the present invention.
In the figure, 6 is a coaxial plug, 7 is a parallel-to-unparallel converter, 20 is a loop-shaped conductor, 21 is a U-shaped semi-loop-shaped conductor whose both ends are open ends, and 24 and 25 are Power supply conductor. The broadband antenna according to the present embodiment includes the broadband antenna according to the second embodiment and the broadband antenna line-symmetric with the broadband antenna according to the second embodiment with respect to the end surface on the side of the ground conductor 3. This is a broadband antenna formed in the above.
【００２７】本実施の形態の広帯域アンテナによれば、
誘電体基板５の面に対して鉛直な方向で強い放射を行う
ことができるので、これにより、本実施の形態の広帯域
アンテナによれば、高利得、かつ双方向指向特性を有
し、従来より帯域特性を広帯域とすることができる。し
たがって、本実施の形態の広帯域アンテナは、広帯域で
双方向に無線ゾーンを必要とするアレイアンテナのアン
テナ素子として有用であるばかりか、誘電体基板５の面
に平行となるように導電性の平面反射板、コーナ形反射
板等の反射器を適宜設けることにより、広帯域で単一方
向に無線ゾーンを必要とするアレイアンテナのアンテナ
素子として有用である。According to the broadband antenna of this embodiment,
Since strong radiation can be performed in a direction perpendicular to the surface of the dielectric substrate 5, the broadband antenna according to the present embodiment has high gain and bidirectional directivity, The band characteristics can be wide. Therefore, the broadband antenna according to the present embodiment is useful not only as an antenna element of an array antenna requiring a wireless zone in both directions over a wide band, but also as a conductive plane parallel to the surface of the dielectric substrate 5. Properly providing a reflector such as a reflector or a corner reflector is useful as an antenna element of an array antenna requiring a wireless zone in a single direction over a wide band.
【００２８】図１３は、本実施の形態の広帯域アンテナ
をアンテナ素子として利用するアレイアンテナの一例を
示す図である。図１３に示すように、図１２に示す広帯
域アンテナを配置することで、容易にアンテナの放射開
口を広げることができるため、広帯域で高利得が要求さ
れるアレイアンテナのアンテナ素子として有用である。FIG. 13 is a diagram showing an example of an array antenna using the wideband antenna of the present embodiment as an antenna element. As shown in FIG. 13, by disposing the wideband antenna shown in FIG. 12, the radiation aperture of the antenna can be easily widened. Therefore, the antenna is useful as an antenna element of an array antenna requiring a high gain in a wideband.
【００２９】図１４は、本実施の形態の広帯域アンテナ
の他の例の概略構成を示す図である。同図において、２
２，２３は一端部が開放端とされるＬ字形状のＬ字形導
電体である。図１４に示す広帯域アンテナは、Ｌ字形導
電体（２２，２３）の平行部領域が相対向するように、
Ｌ字形導電体（２２，２３）を設置し、また、Ｌ字形導
電体（２２，２３）の各他端部を、ループ状導電体２０
に接続するようにしたものである。図１４に示す広帯域
アンテナにおいても、誘電体基板５の面に対して鉛直な
方向で強い放射を行うことができる。なお、図１２、図
１３において、点線は、給電導電体（２４，２５）に給
電するための線路を示す。FIG. 14 is a diagram showing a schematic configuration of another example of the wideband antenna according to the present embodiment. In the figure, 2
Reference numerals 2 and 23 denote L-shaped L-shaped conductors each having an open end. In the broadband antenna shown in FIG. 14, the parallel portions of the L-shaped conductors (22, 23) are opposed to each other.
The L-shaped conductors (22, 23) are installed, and the other end of each of the L-shaped conductors (22, 23) is connected to the loop-shaped conductor 20.
It is intended to be connected to. The broadband antenna shown in FIG. 14 can also emit strong radiation in a direction perpendicular to the surface of the dielectric substrate 5. In FIGS. 12 and 13, dotted lines indicate lines for supplying power to the power supply conductors (24, 25).
【００３０】［実施の形態５］図１５は、本発明の実施
の形態５の広帯域アンテナの概略構成を示す斜視図であ
る。本実施の形態の広帯域アンテナは、双方向指向特性
の程度を調整するために、半ループ状導電体１とＬ字形
導電体２1 との平行部領域を、直角に曲げるようにした
点で、前記実施の形態１と相違する。図１６は、本実施
の形態の広帯域アンテナの一例の、図１５に示す座標系
における、Ｘ−Ｙ面の電界成分の指向特性を示すグラフ
である。この図１６のグラフから分かるように、本実施
の形態の広帯域アンテナによれば、指向特性の最大放射
方向が単一化されるため、無線ゾーンの規模や方向に合
わせた調整が可能となる。なお、本実施の形態の広帯域
アンテナにおいて、半ループ状導電体１とＬ字形導電体
２1 との平行部領域を直角に曲げる代わりに、図１７に
示すように、半ループ状導電体１とＬ字形導電体２1 と
の平行部領域を円弧状に形成するようにしてもよい。[Fifth Embodiment] FIG. 15 is a perspective view showing a schematic configuration of a broadband antenna according to a fifth embodiment of the present invention. Broadband antenna of the present embodiment, in order to adjust the degree of two-way directional characteristic, in that the parallel region of the half-loop-shaped conductor 1 and the L-shaped conductor 2 1, and the bend at a right angle, This is different from the first embodiment. FIG. 16 is a graph showing the directional characteristics of the electric field component on the XY plane in the coordinate system shown in FIG. 15 for an example of the broadband antenna according to the present embodiment. As can be seen from the graph of FIG. 16, according to the broadband antenna of the present embodiment, since the maximum radiation direction of the directional characteristics is unified, adjustment according to the scale and direction of the wireless zone is possible. Incidentally, in the antenna of the present embodiment, instead of bending the parallel region of the half-loop-shaped conductor 1 and the L-shaped conductor 2 1 at right angles, as shown in FIG. 17, the half-loop-shaped conductor 1 parallel region of the L-shaped conductor 2 1 may be formed in an arc shape.
【００３１】本発明者によってなされた発明を、前記実
施の形態に基づき具体的に説明したが、本発明は、前記
実施の形態に限定されるものではなく、その要旨を逸脱
しない範囲において種々変更可能であることは勿論であ
る。Although the invention made by the inventor has been specifically described based on the above embodiment, the present invention is not limited to the above embodiment, and various modifications may be made without departing from the gist of the invention. Of course, it is possible.
【００３２】[0032]
【発明の効果】本願において開示される発明のうち代表
的なものによって得られる効果を簡単に説明すれば、下
記の通りである。The effects obtained by typical ones of the inventions disclosed in the present application will be briefly described as follows.
【００３３】（１）本発明によれば、第２導電体の端子
部領域の一方と、第１導電体の端子部領域、または給電
導電体を電磁的に結合させることにより、第２導電体を
無給電素子として機能させるようにしたので、従来より
も帯域特性を広帯域とすることができ、これにより、低
姿勢で、かつ双方向指向特性を有し、従来よりも広帯域
な広帯域アンテナを提供することが可能となる。(1) According to the present invention, one of the terminal portion regions of the second conductor and the terminal portion region of the first conductor or the power supply conductor are electromagnetically coupled to each other to form the second conductor portion. Is made to function as a parasitic element, so that the band characteristics can be made wider than before, thereby providing a broadband antenna having a low attitude, bidirectional directional characteristics, and a wider band than before. It is possible to do.
【００３４】（２）本発明によれば、前記低姿勢で、か
つ双方向指向特性を有する広帯域アンテナと、当該広帯
域アンテナと線対称の広帯域アンテナとを、誘電体基板
に形成するようにしたので、誘電体基板の面に対して鉛
直な方向で強い放射を行うことができ、これにより、高
利得、かつ双方向指向特性を有し、従来よりも広帯域な
広帯域アンテナを提供することが可能となる。(2) According to the present invention, the wide-band antenna having the low attitude and having the bidirectional directional characteristics and the wide-band antenna line-symmetric to the wide-band antenna are formed on the dielectric substrate. , It is possible to radiate strong radiation in a direction perpendicular to the surface of the dielectric substrate, thereby providing a broadband antenna having a high gain, a bidirectional directivity, and a wider band than before. Become.
【図１】本発明の実施の形態１の広帯域アンテナの概略
構成を示す斜視図である。FIG. 1 is a perspective view showing a schematic configuration of a broadband antenna according to a first embodiment of the present invention.
【図２】本実施の形態１の広帯域アンテナの一例のＶＳ
ＷＲの周波数特性を示すグラフである。FIG. 2 is a diagram illustrating VS as an example of the broadband antenna according to the first embodiment;
5 is a graph showing frequency characteristics of WR.
【図３】本実施の形態１の広帯域アンテナの一例の、周
波数が８４０ＭＨｚときのＸ−Ｙ面の電界成分の指向特
性を示すグラフである。FIG. 3 is a graph showing the directional characteristics of the electric field component on the XY plane when the frequency is 840 MHz in an example of the wideband antenna according to the first embodiment.
【図４】本実施の形態１の広帯域アンテナの一例の、周
波数が９２０ＭＨｚのときのＸ−Ｙ面の電界成分の指向
特性を示すグラフである。FIG. 4 is a graph showing the directional characteristics of electric field components on the XY plane when the frequency is 920 MHz, as an example of the broadband antenna according to the first embodiment.
【図５】本実施の形態１の広帯域アンテナの一例の、周
波数が１０００ＭＨｚのときのＸ−Ｙ面の電界成分の指
向特性を示すグラフである。FIG. 5 is a graph showing the directional characteristics of the electric field component on the XY plane when the frequency is 1000 MHz, as an example of the broadband antenna according to the first embodiment.
【図６】本実施の形態１の広帯域アンテナの他の例を示
す模式図である。FIG. 6 is a schematic diagram showing another example of the broadband antenna according to the first embodiment.
【図７】本実施の形態１の広帯域アンテナの他の例を示
す模式図である。FIG. 7 is a schematic diagram showing another example of the broadband antenna according to the first embodiment.
【図８】本実施の形態１の広帯域アンテナにおける接地
導電体の他の例を示す模式図である。FIG. 8 is a schematic diagram showing another example of the ground conductor in the broadband antenna according to the first embodiment.
【図９】接地導電体として、図８に示す接地導電体を使
用したときのＸ−Ｚ面における指向特性を示す模式図で
ある。9 is a schematic diagram showing directivity characteristics in the XZ plane when the ground conductor shown in FIG. 8 is used as the ground conductor.
【図１０】本発明の実施の形態２の広帯域アンテナの概
略構成を示す斜視図である。FIG. 10 is a perspective view illustrating a schematic configuration of a broadband antenna according to a second embodiment of the present invention.
【図１１】本発明の実施の形態３の広帯域アンテナの概
略構成を示す図である。FIG. 11 is a diagram illustrating a schematic configuration of a broadband antenna according to a third embodiment of the present invention.
【図１２】本発明の実施の形態４の広帯域アンテナの概
略構成を示す図である。FIG. 12 is a diagram illustrating a schematic configuration of a broadband antenna according to a fourth embodiment of the present invention.
【図１３】本発明の実施の形態４の広帯域アンテナをア
ンテナ素子として利用するアレイアンテナの一例を示す
図である。FIG. 13 is a diagram showing an example of an array antenna using the wideband antenna according to the fourth embodiment of the present invention as an antenna element.
【図１４】本発明の実施の形態４の広帯域アンテナの他
の例の概略構成を示す図である。FIG. 14 is a diagram illustrating a schematic configuration of another example of the wideband antenna according to the fourth embodiment of the present invention.
【図１５】本発明の実施の形態５の広帯域アンテナの概
略構成を示す斜視図である。FIG. 15 is a perspective view illustrating a schematic configuration of a broadband antenna according to a fifth embodiment of the present invention.
【図１６】本実施の形態５の広帯域アンテナの一例のＸ
−Ｙ面の電界成分の指向特性を示すグラフである。FIG. 16 shows an example of a wideband antenna X of the fifth embodiment.
It is a graph which shows the directivity characteristic of the electric field component of the -Y plane.
【図１７】本発明の実施の形態５の広帯域アンテナの他
の例の概略構成を示す斜視図である。FIG. 17 is a perspective view showing a schematic configuration of another example of the wideband antenna according to the fifth embodiment of the present invention.
【図１８】従来の半ループアンテナの概略構成を示す斜
視図である。FIG. 18 is a perspective view showing a schematic configuration of a conventional half-loop antenna.
【図１９】図１８に示す半ループアンテナの一例のＸ−
Ｙ面の電界成分の指向特性を示すグラフである。FIG. 19 is a diagram illustrating an example of a half-loop antenna shown in FIG.
6 is a graph showing the directivity characteristics of the electric field component on the Y plane.
【図２０】図１８に示す半ループアンテナの一例のＶＳ
ＷＲの周波数特性を示すグラフである。20 is a diagram illustrating VS of an example of the half-loop antenna shown in FIG. 18;
5 is a graph showing frequency characteristics of WR.
１，１１，…半ループ状導電体、２1 ，２２，２３…Ｌ
字形導電体、２2 ，２４，２５…給電導電体、３，３
ａ，３ｂ，１２…接地導電体、４，１３…給電点、４1
…芯導体、５…誘電体基板、６…同軸接栓、７…平行−
不平行変換器、２０…ループ状導電体。1, 11,..., Semi-looped conductor, 2 1 , 22, 23,.
-Shaped conductor, 2 2 , 24, 25 ... power supply conductor, 3, 3
a, 3b, 12: ground conductor, 4, 13: feeding point, 4 1
... core conductor, 5 ... dielectric substrate, 6 ... coaxial plug, 7 ... parallel-
Non-parallel converter, 20: loop-shaped conductor.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三本 圭二 東京都千代田区神田岩本町１番地 岩本町 ビル 日本電業工作株式会社内 (72)発明者 中野 雅之 東京都千代田区六番町６番地 日本移動通 信株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Keiji Sanbon 1 Kanda Iwamotocho, Chiyoda-ku, Tokyo Iwamotocho Building Inside Nippon Electric Industry Co., Ltd. (72) Inventor Masayuki Nakano 6-6, Rokubancho, Chiyoda-ku, Tokyo Nippon Mobile Communications Co., Ltd.
Claims (7)
的に接続される第１導電体と、前記第１導電体の一端部
から所定距離離れた一点と給電点とを接続する給電導電
体とで構成される励振素子と、 両端部が前記接地導電体と電気的に接続される第２導電
体で構成され、前記第２導電体の一方の端部を含む第１
端子部領域、あるいは他方の端部を含む第２端子部領域
が、前記第１導電体の他端部を含む端子部領域、あるい
は、前記給電導電体と略平行に設置される無給電素子と
を有することを特徴とする広帯域アンテナ。1. A ground conductor, a first conductor having one end open, and the other end electrically connected to the ground conductor, and a predetermined distance from one end of the first conductor. An excitation element composed of a power supply conductor connecting a distant point and a power supply point; and a second conductor having both ends electrically connected to the ground conductor. The first including one end
A terminal portion region, or a second terminal portion region including the other end portion, a terminal portion region including the other end portion of the first conductor, or a parasitic element installed substantially in parallel with the power supply conductor. A broadband antenna comprising:
と前記無給電素子とは、前記誘電体基板の表面に形成さ
れることを特徴とする請求項１に記載の広帯域アンテ
ナ。2. The broadband antenna according to claim 1, further comprising a dielectric substrate, wherein the excitation element and the parasitic element are formed on a surface of the dielectric substrate.
導電体と電気的に接続される第２導電体で構成される無
給電素子と、 前記誘電体基板の一表面の反対側の面に形成され、一端
部が開放端とされ、他端部が前記第２導電体の一方の端
部を含む第１端子部領域、あるいは他方の端部を含む第
２端子部領域と高周波的に結合される第１導電体と、前
記第１導電体の一端部から所定距離離れた一点と給電点
とを接続する給電導電体とで構成される励振素子とを有
する広帯域アンテナであって、 前記給電導電体は、前記第２導電体の少なくとも一部の
投影領域内を通って、前記第２導電体の第２端子部領
域、あるいは第１端子部領域の端部に設けられた給電点
まで延長されることを特徴とする広帯域アンテナ。3. An unpowered power supply comprising: a ground conductor; a dielectric substrate; and a second conductor formed on one surface of the dielectric substrate and having both ends electrically connected to the ground conductor. An element, formed on a surface opposite to one surface of the dielectric substrate, one end being an open end, and the other end including a first terminal region including one end of the second conductor, or A first conductor coupled at a high frequency to a second terminal region including the other end, and a power supply conductor connecting a point at a predetermined distance from one end of the first conductor to a power supply point. Wherein the feeding conductor passes through at least a part of a projection area of the second conductor, and a second terminal area of the second conductor, or A wide band extending to a feeding point provided at an end of the first terminal area. antenna.
垂直に設置される前記端子部領域と、前記接地導電体に
略平行に設置される前記一端部を含む平行部領域とで構
成され、また、前記給電導電体は、前記接地導電体に略
垂直に設置され、 さらに、前記第２導電体は、前記接地導電体に略垂直に
設置される前記第１端子部領域と、前記接地導電体に略
垂直に設置される前記第２端子部領域と、前記接地導電
体に略平行に設置される平行部領域とで構成されること
を特徴とする請求項１ないし請求項３のいずれか１項に
記載の広帯域アンテナ。4. The first conductor includes a terminal area provided substantially perpendicular to the ground conductor, and a parallel area including the one end provided substantially parallel to the ground conductor. And the power supply conductor is disposed substantially perpendicular to the ground conductor, and the second conductor is disposed in the first terminal region substantially perpendicular to the ground conductor. 4. The device according to claim 1, wherein said second terminal portion region is provided substantially perpendicular to said ground conductor, and a parallel portion region is provided substantially parallel to said ground conductor. The broadband antenna according to any one of the preceding claims.
第２導電体を頂角とする優角コーナ状、あるいは第１導
電体、または第２導電体の設置位置を円弧外とする円弧
状に形成されることを特徴とする請求項１ないし請求項
４のいずれか１項に記載の広帯域アンテナ。5. The grounding conductor is formed in a corner shape having a first conductor or a second conductor as an apex, or an installation position of the first conductor or the second conductor is outside a circular arc. The broadband antenna according to any one of claims 1 to 4, wherein the antenna is formed in an arc shape.
導電体と、前記第１導電体の一端部から所定距離離れた
一点と給電点とを接続する第１給電導電体と、前記第１
導電体の他端部から所定距離離れた一点と給電点とを接
続する第２給電導電体とで構成される励振素子と、 一部分が、前記第１導電体の一部分と略平行に設置され
るループ状の第２導電体で構成される無給電素子とを有
することを特徴とする広帯域アンテナ。6. A loop-shaped first end whose both ends are open ends.
A conductor, a first power supply conductor connecting a point at a predetermined distance from one end of the first conductor and a power supply point,
An exciting element composed of a second power-supply conductor that connects a point separated by a predetermined distance from the other end of the conductor and a power-supply point; and a part is installed substantially parallel to a part of the first conductor. A broadband antenna comprising: a parasitic element formed of a loop-shaped second conductor.
電素子と、 一端部が開放端とされ、他端部が互いに前記第３導電体
に接続される第１導電体および第２導電体と、前記第１
導電体の一端部から所定距離離れた一点と給電点とを接
続する第１給電導電体と、前記第２導電体の一端部から
所定距離離れた一点と給電点とを接続する第２給電導電
体とで構成される励振素子とを有する広帯域アンテナで
あって、 前記第３導電体の一部分は、前記第１導電体および第２
導電体の一部分と略平行に設置されることを特徴とする
広帯域アンテナ。7. A parasitic element composed of a loop-shaped third conductor, a first conductor and a second conductor, one end of which is an open end, and the other end of which is connected to the third conductor. A conductor;
A first power supply conductor connecting a point at a predetermined distance from one end of the conductor and a power supply point, and a second power supply conductor connecting a point at a predetermined distance from the one end of the second conductor and a power supply point. A broadband antenna having an excitation element composed of a first conductor and a second conductor.
A broadband antenna, being installed substantially parallel to a part of a conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12852398A JP3980172B2 (en) | 1998-05-12 | 1998-05-12 | Broadband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12852398A JP3980172B2 (en) | 1998-05-12 | 1998-05-12 | Broadband antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11330842A true JPH11330842A (en) | 1999-11-30 |
| JP3980172B2 JP3980172B2 (en) | 2007-09-26 |
Family
ID=14986860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12852398A Expired - Lifetime JP3980172B2 (en) | 1998-05-12 | 1998-05-12 | Broadband antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3980172B2 (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000031732A (en) * | 1998-07-10 | 2000-01-28 | Nippon Dengyo Kosaku Co Ltd | Dual-polarized antenna |
| JP2001339218A (en) * | 2000-05-29 | 2001-12-07 | Nippon Dengyo Kosaku Co Ltd | Moving body |
| WO2002019465A1 (en) * | 2000-08-31 | 2002-03-07 | Matsushita Electric Industrial Co., Ltd. | Built-in antenna for radio communication terminal |
| JP2002076736A (en) * | 2000-08-31 | 2002-03-15 | Nec Corp | Chip antenna |
| WO2002047202A1 (en) * | 2000-12-08 | 2002-06-13 | Matsushita Electric Industrial Co., Ltd. | Antenna apparatus and communication system |
| WO2003034539A1 (en) * | 2001-10-11 | 2003-04-24 | Taiyo Yuden Co., Ltd. | Dielectric antenna |
| JP2004129062A (en) * | 2002-10-04 | 2004-04-22 | Sharp Corp | Frequency sharing antenna |
| JP2004201278A (en) * | 2002-12-06 | 2004-07-15 | Sharp Corp | Pattern antenna |
| JP2004207992A (en) * | 2002-12-25 | 2004-07-22 | Japan Radio Co Ltd | Low reflection loss T-type antenna |
| JP2004241884A (en) * | 2003-02-04 | 2004-08-26 | Hitachi Cable Ltd | antenna |
| EP1453138A1 (en) * | 2003-02-25 | 2004-09-01 | Nec Corporation | Antenna apparatus having high receiving efficiency |
| JP2005006168A (en) * | 2003-06-13 | 2005-01-06 | Usc Digiark Corp | Antenna device |
| JP2005507185A (en) * | 2001-05-29 | 2005-03-10 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Integrated antenna for laptop applications |
| EP1555715A1 (en) * | 2004-01-13 | 2005-07-20 | Kabushiki Kaisha Toshiba | Antenna device and mobile communication terminal equipped with antenna device |
| JP2006186851A (en) * | 2004-12-28 | 2006-07-13 | Toshiba Corp | Antenna system |
| JP2007282079A (en) * | 2006-04-11 | 2007-10-25 | Nippon Antenna Co Ltd | Antenna device |
| JP2008016936A (en) * | 2006-07-03 | 2008-01-24 | Nippon Antenna Co Ltd | Antenna and antenna device |
| WO2017054127A1 (en) * | 2015-09-29 | 2017-04-06 | 华为技术有限公司 | Communication equipment |
| JPWO2018198981A1 (en) * | 2017-04-27 | 2020-03-12 | Ａｇｃ株式会社 | Antenna and MIMO antenna |
| WO2021084973A1 (en) * | 2019-10-29 | 2021-05-06 | Ｎｅｃプラットフォームズ株式会社 | Antenna and wireless communication system |
-
1998
- 1998-05-12 JP JP12852398A patent/JP3980172B2/en not_active Expired - Lifetime
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000031732A (en) * | 1998-07-10 | 2000-01-28 | Nippon Dengyo Kosaku Co Ltd | Dual-polarized antenna |
| JP2001339218A (en) * | 2000-05-29 | 2001-12-07 | Nippon Dengyo Kosaku Co Ltd | Moving body |
| WO2002019465A1 (en) * | 2000-08-31 | 2002-03-07 | Matsushita Electric Industrial Co., Ltd. | Built-in antenna for radio communication terminal |
| JP2002076736A (en) * | 2000-08-31 | 2002-03-15 | Nec Corp | Chip antenna |
| US6987485B2 (en) | 2000-08-31 | 2006-01-17 | Matsushita Electric Industrial Co., Ltd. | Built-in antenna for radio communication terminal |
| US6859174B2 (en) | 2000-12-08 | 2005-02-22 | Matsushita Electric Industrial Co., Ltd. | Antenna device and communications system |
| WO2002047202A1 (en) * | 2000-12-08 | 2002-06-13 | Matsushita Electric Industrial Co., Ltd. | Antenna apparatus and communication system |
| JP2005507185A (en) * | 2001-05-29 | 2005-03-10 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Integrated antenna for laptop applications |
| WO2003034539A1 (en) * | 2001-10-11 | 2003-04-24 | Taiyo Yuden Co., Ltd. | Dielectric antenna |
| US6946994B2 (en) | 2001-10-11 | 2005-09-20 | Taiyo Yuden Co., Ltd. | Dielectric antenna |
| JP2004129062A (en) * | 2002-10-04 | 2004-04-22 | Sharp Corp | Frequency sharing antenna |
| JP2004201278A (en) * | 2002-12-06 | 2004-07-15 | Sharp Corp | Pattern antenna |
| JP2004207992A (en) * | 2002-12-25 | 2004-07-22 | Japan Radio Co Ltd | Low reflection loss T-type antenna |
| JP2004241884A (en) * | 2003-02-04 | 2004-08-26 | Hitachi Cable Ltd | antenna |
| EP1453138A1 (en) * | 2003-02-25 | 2004-09-01 | Nec Corporation | Antenna apparatus having high receiving efficiency |
| CN1316678C (en) * | 2003-02-25 | 2007-05-16 | 日本电气株式会社 | Antenna apparatus having high receiving efficiency |
| US7026996B2 (en) | 2003-02-25 | 2006-04-11 | Nec Corporation | Antenna apparatus having high receiving efficiency |
| JP2005006168A (en) * | 2003-06-13 | 2005-01-06 | Usc Digiark Corp | Antenna device |
| EP1555715A1 (en) * | 2004-01-13 | 2005-07-20 | Kabushiki Kaisha Toshiba | Antenna device and mobile communication terminal equipped with antenna device |
| US7358906B2 (en) | 2004-01-13 | 2008-04-15 | Kabushiki Kaisha Toshiba | Antenna device and mobile communication terminal equipped with antenna device |
| JP2006186851A (en) * | 2004-12-28 | 2006-07-13 | Toshiba Corp | Antenna system |
| JP2007282079A (en) * | 2006-04-11 | 2007-10-25 | Nippon Antenna Co Ltd | Antenna device |
| JP4732222B2 (en) * | 2006-04-11 | 2011-07-27 | 日本アンテナ株式会社 | Antenna device |
| JP2008016936A (en) * | 2006-07-03 | 2008-01-24 | Nippon Antenna Co Ltd | Antenna and antenna device |
| WO2017054127A1 (en) * | 2015-09-29 | 2017-04-06 | 华为技术有限公司 | Communication equipment |
| CN108292794A (en) * | 2015-09-29 | 2018-07-17 | 华为技术有限公司 | A kind of communication equipment |
| CN108292794B (en) * | 2015-09-29 | 2020-03-31 | 华为技术有限公司 | Communication equipment |
| US11355832B2 (en) | 2015-09-29 | 2022-06-07 | Huawei Technologies Co., Ltd. | Communications device |
| JPWO2018198981A1 (en) * | 2017-04-27 | 2020-03-12 | Ａｇｃ株式会社 | Antenna and MIMO antenna |
| WO2021084973A1 (en) * | 2019-10-29 | 2021-05-06 | Ｎｅｃプラットフォームズ株式会社 | Antenna and wireless communication system |
| JP2021072461A (en) * | 2019-10-29 | 2021-05-06 | Ｎｅｃプラットフォームズ株式会社 | Antenna and wireless communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3980172B2 (en) | 2007-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7589686B2 (en) | Small ultra wideband antenna having unidirectional radiation pattern | |
| JP3980172B2 (en) | Broadband antenna | |
| KR101202969B1 (en) | Broad band antenna | |
| US20050116873A1 (en) | Notched-fed antenna | |
| TWI518992B (en) | High gain antenna and wireless device | |
| CN112956078B (en) | Three-dimensional inverted-F antenna element, antenna assembly with same and communication system | |
| US7554507B2 (en) | UWB antenna with unidirectional radiation pattern | |
| JP3114836B2 (en) | Printed dipole antenna | |
| CN116420279A (en) | Multi-frequency antenna and communication equipment | |
| US20180123236A1 (en) | Antenna System and Antenna Module With a Parasitic Element For Radiation Pattern Improvements | |
| EP1542312A2 (en) | Planar antenna | |
| JPH08204431A (en) | Multi-resonance antenna device | |
| US8199065B2 (en) | H-J antenna | |
| CN114389019A (en) | Antenna system | |
| JP4112136B2 (en) | Multi-frequency antenna | |
| CN111370858B (en) | Directional UHF antenna and electronic equipment | |
| EP1324423A1 (en) | Low-cost printed omni-directional monopole antenna for ultra-wideband in mobile applications | |
| JP4053144B2 (en) | Dual-polarized antenna | |
| CN103036008A (en) | Asymmetric dipole antenna | |
| JP2005286915A (en) | Multi-frequency antenna | |
| CN115241646A (en) | Antenna and communication equipment | |
| JP3258819B2 (en) | Composite antenna | |
| JP2005203971A (en) | Antenna device and system | |
| JPH1041740A (en) | Portable radio | |
| CN105633586A (en) | Antenna device and electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050125 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060421 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060502 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060629 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060829 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061030 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070123 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070323 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070626 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070627 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100706 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110706 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120706 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130706 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |